"Any New York Public Library cardholder in good standing who lives, works or attends school in New York State is eligible to participate in a new library service that offers an unprecedented level of access to our collections. The Manhattan Research Libraries Initiative (MaRLI) offers approved NYPL cardholders the ability to borrow select research library material for at-home use for the first time ever. Additionally, MaRLI participants will be granted access to select materials owned by Columbia University and NYU." (from the MaRLI website)

FDLP libraries must grant access to any researcher who wishes to access collections.

Regional depository libraries keep copies of any documents received and must make them available to selective depository libraries.

Selective depository libraries choose what to keep on hand.

Depending on what you want to do, you may wish to contact the library to ask what resources are available to gov doc researchers. Access to computers, online resources, and the regular collections may vary depending on that library's policy.